Science > Physics > =?utf-8?q?Einstein=E2=80=99s_E=3Dmc2_._Should_Newton_,_De_Pretto_,_Preston,_Hasenohrl__and_Soddi,_Planck_be_given__credit__for___discovery_of_E=3Dmc2._=3F?=
| Topic: |
Science > Physics |
| User: |
"AJAY SHARMA" |
| Date: |
29 Sep 2006 11:40:14 PM |
| Object: |
=?utf-8?q?Einstein=E2=80=99s_E=3Dmc2_._Should_Newton_,_De_Pretto_,_Preston,_Hasenohrl__and_Soddi,_Planck_be_given__credit__for___discovery_of_E=3Dmc2._=3F?= |
Einstein=E2=80=99s E=3Dmc2 . Should Newton , De Pretto , Preston, Hasenohrl
and Soddi, Planck be given credit for discovery of E=3Dmc2. ?
The French chemist Antoine Lavoisier (1743-1794) was the first to
formulate a law of conservation of matter in chemical reactions. The
concept of inter-conversion of mass and energy has been studied by
various scientists qualitatively, even before Einstein.
1=2E Newton has quoted in his book =E2=80=98Opticks=E2=80=99 in 1704 t=
hat
"Gross bodies and light are convertible into one another...",
After about 200 years Einstein derived mathematical equation for
Newton=E2=80=99s perception i.e. =E2=88=86L =3D=E2=88=86mc2 where =E2=88=
=86L is light energy
emitted when mass =E2=88=86m is annihilated and is speed of light. It is
the rarest coincidence in between Newton=E2=80=99s hypothesis and
Einstein=E2=80=99s mathematical derivation.
2=2E S. Tolver Preston proposed that a vast amount of energy can be
produced from matter in his book Physics of the Ether in 1875.
Preston determined that one grain could lift a 100,000-ton object up to
a height of 1.9 miles. This deduction yields dE =EF=82=B5 dmc2.
3=2E Jules Henri Poincar=C3=A9 in 1900 applied the calculations in a
recoil process and reached at the conclusion in the form, mv =3D (E/c2)c.
From the viewpoint of dimensional analysis, E/c2 takes on the role of
a =E2=80=98mass=E2=80=99 associated with radiation, which yields E=3Dmc2.
4=2E Olinto De Pretto speculated E=3Dmc2, implying that when v=3Dc , then
E=3D mv2 becomes E=3Dmc2 , in 1903-04. But Pretto neither gave
specific derivation nor mathematical calculations. Bartocci claimed
that Einstein was aware of De Pretto=E2=80=99s speculation of E=3D=E2=88=86=
mc2 ,
which was published about a year before.
5. Fritz Hasenohrl in 1904, concluded: =E2=80=9Cto the mechanical mass
of our system must be added an apparent mass which is given by,
m=3D8E/3c2 where E is the energy of the radiation.=E2=80=9D In a later pa=
per
he further improved result that mass exchanged is, m=3D4E/3c2. Ebenezer
Cunningham in 1914 in the book The Principles of Relativity showed that
F=2E Hasen=C3=B6hrl, had made a slight error in his calculations. If errors
are removed then the mass exchanged is m =3DE/c2 or E =3D mc2. Thus in this
regard Hasenohrl=E2=80=99s contribution is the most significant, before
Einstein.
6=2E Frederick Soddi and M. Henri Becquerel both have predicted that in
radioactive emissions the mass of body decreases i.e. energy of
radiations is at the cost of mass.
7=2E Max Planck in 1907 made an in-depth investigation of the energy
"confined" within a body, but he did not use Einstein=E2=80=99s approach at
all. Planck derived an expression m-M=3D E/c2, for heat energy and mass
and interpreted that
=E2=80=9D The inertia mass of body is altered by absorption or emission of
heat energy. The increments of mass of body are equal to heat energy
divided by square of speed of light.=E2=80=9D
Planck acknowledged Einstein=E2=80=99s previous derivation but did not agree
with correctness of Einstein=E2=80=99s derivation.
Should these scientists be credit of doing basic work in assisting the
discovery of E=3Dmc2 ?
Today, E=3Dmc2 is regarded a sole province of Einstein.
Complied from various sources.
If some scientists is left , please add. I think one is JJ Thomson
Main sources for compilation
100 Years of E=3Dmc2
https://www.novapublishers.com/catalog/product_info.php?cPath=3D23_48_324&p=
roducts_id=3D4554
AJAY SHARMA 30 Sep 2006.
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| User: "Helmut Wabnig" |
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| Title: Re: Einstein’s E=mc2 . Should Newton , De Pretto , Preston, Hasenohrl and Soddi, Planck be given credit for discovery of E=mc2. ? |
30 Sep 2006 01:33:39 AM |
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On 29 Sep 2006 21:40:14 -0700, "AJAY SHARMA" <devianju@gmail.com>
wrote:
Today, E=mc2 is regarded a sole province of Einstein.
"is regarded" By whom? Where? When?
By you? By the Great Unwashed?
Why do you care at all?
w.
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| User: "AJAY SHARMA" |
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| Title: Re: Einstein's E=mc2 . Should Newton , De Pretto , Preston, Hasenohrl and Soddi, Planck be given credit for discovery of E=mc2. ? |
30 Sep 2006 01:57:24 AM |
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Helmut Wabnig wrote:
On 29 Sep 2006 21:40:14 -0700, "AJAY SHARMA" <devianju@gmail.com>
wrote:
Today, E=mc2 is regarded a sole province of Einstein.
"is regarded" By whom? Where? When?
By you? By the Great Unwashed?
Why do you care at all?
w.
------------------------------------
I mean doscovery of E=mc2 is credited to Einstein only. Whereas there
are others who did work on the topic and paved way for Einstein.
AJAY SHARMA
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| User: "Helmut Wabnig" |
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| Title: Re: Einstein's E=mc2 . Should Newton , De Pretto , Preston, Hasenohrl and Soddi, Planck be given credit for discovery of E=mc2. ? |
30 Sep 2006 02:44:11 AM |
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On 29 Sep 2006 23:57:24 -0700, "AJAY SHARMA"
<physics.einstein@gmail.com> wrote:
Helmut Wabnig wrote:
On 29 Sep 2006 21:40:14 -0700, "AJAY SHARMA" <devianju@gmail.com>
wrote:
Today, E=mc2 is regarded a sole province of Einstein.
"is regarded" By whom? Where? When?
By you? By the Great Unwashed?
Why do you care at all?
w.
------------------------------------
I mean doscovery of E=mc2 is credited to Einstein only.
What makes you believe that. It is simply not true.
Having read just -one- newspaper article does not
qualify you to give such fundamental statements.
A million newspaper articles do not make up a worthful
data base, as newspapers are asswipes only.
Whereas there
are others who did work on the topic and paved way for Einstein.
AJAY SHARMA
Do you really believe that is your original discovery?
Do you think nobody else before you noticed that?
Your efforts are superfluous, too little, and 100 years too late..
w.
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| User: "AJAY SHARMA" |
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| Title: Re: Einstein's E=mc2 . Should Newton , De Pretto , Preston, Hasenohrl and Soddi, Planck be given credit for discovery of E=mc2. ? |
30 Sep 2006 07:18:56 AM |
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Helmut Wabnig wrote:
On 29 Sep 2006 23:57:24 -0700, "AJAY SHARMA"
<physics.einstein@gmail.com> wrote:
Helmut Wabnig wrote:
On 29 Sep 2006 21:40:14 -0700, "AJAY SHARMA" <devianju@gmail.com>
wrote:
Today, E=mc2 is regarded a sole province of Einstein.
"is regarded" By whom? Where? When?
By you? By the Great Unwashed?
Why do you care at all?
w.
------------------------------------
I mean doscovery of E=mc2 is credited to Einstein only.
What makes you believe that. It is simply not true.
Having read just -one- newspaper article does not
qualify you to give such fundamental statements.
A million newspaper articles do not make up a worthful
data base, as newspapers are asswipes only.
Whereas there
are others who did work on the topic and paved way for Einstein.
AJAY SHARMA
Do you really believe that is your original discovery?
Do you think nobody else before you noticed that?
Your efforts are superfluous, too little, and 100 years too late..
w.
------------------
---------AJAY SHARMA responds to Webnig--------------
Well it is in literature. I have quoted the facts in research papers
and book.
I have given all references.
In my book
100 Years of E=mc2.
https://www.novapublishers.com/catalog/product_info.php?cPath=23_48_324&products_id=4554
I have discussed all aspects of E=mc2.
When it was derived?
Which is the most original paper?
The answer to his question is
A.Einstein, Annalen der Physik 18 (1905) 639-641.
.. DOES THE INERTIA OF A BODY DEPEND
UPON ITS ENERGY-CONTENT?
Weblink is
Einstein's 27 Sep 1905 paper available at
http://www.fourmilab.ch/etexts/einstein/E_mc2/www/
Under what conditions E=mc2 was derived ?
What are limitations of the derivation ?
What could be next form of E=mc2?
All these things are discussed . With availability of INTERNET, all
things became easier.
People are realising the truths now.
AJAY SHARMA
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